virtio-net-test: remove unused macro

Reviewed-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NJason Wang <jasowang@redhat.com>
Message-id: 20181204035347.6148-5-jasowang@redhat.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

tests/virtio-net-test.c

@@ -24,7 +24,6 @@
 
 #define PCI_SLOT_HP             0x06
 #define PCI_SLOT                0x04
-#define PCI_FN                  0x00
 
 #define QVIRTIO_NET_TIMEOUT_US (30 * 1000 * 1000)
 #define VNET_HDR_SIZE sizeof(struct virtio_net_hdr_mrg_rxbuf)